CN105469961B - A kind of dry-type three-phase transformer - Google Patents

A kind of dry-type three-phase transformer Download PDF

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Publication number
CN105469961B
CN105469961B CN201610020372.XA CN201610020372A CN105469961B CN 105469961 B CN105469961 B CN 105469961B CN 201610020372 A CN201610020372 A CN 201610020372A CN 105469961 B CN105469961 B CN 105469961B
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parts
pressure winding
silica gel
clamping piece
iron core
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CN105469961A (en
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黄伟
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China Zhongbian Group Shanghai Transformer Co., Ltd.
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CHINA ZHONGBIAN GROUP SHANGHAI TRANSFORMER Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/44—Measuring, controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2876—Cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/33—Arrangements for noise damping
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/30—Applications used for thermoforming

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Insulating Of Coils (AREA)

Abstract

Dry-type three-phase transformer of the present invention, include the lower clamping piece of iron core, the upper clamping piece of clamping iron core upper end and clamping iron core lower end, the transformer coil of wound core, cross-over block is installed, the bottom of transformer coil is provided with lower cross-over block at the top of transformer coil, the bottom of lower clamping piece is provided with base, the side of lower clamping piece is provided with cooling blower, and the side of upper clamping piece is provided with outlet copper bar；It is characterized in that transformer coil includes low pressure winding and the high pressure winding that is looped around outside low pressure winding, the outside of low pressure winding and high pressure winding is enclosed with the cast bed of material；The outer wrap of iron core has noise reduction heat dissipating layer；Noise reduction heat dissipating layer includes four layers from the inside to surface, is particle noise reduction layer, the first silica gel layer of cloth, silica gel cushion, the second silica gel layer of cloth successively；Particle noise reduction layer is by the snake stone flour of the mesh of granularity 3000, aluminium nitride, the heat conductive silica gel of the mesh of granularity 6000, by weight 3:4:6 ratios are constituted；Silica gel cushion is heat conductive silica gel.

Description

A kind of dry-type three-phase transformer
Technical field
The invention belongs to electrical equipment technical field, specially a kind of dry-type three-phase transformer.
Background technology
Transformer noise has three sound sources, and one is unshakable in one's determination, and two be winding, and three be cooler, i.e., unloaded, load and cooling System causes noise sum.Iron core, which produces noise reasons, to be constituted under electrical steel piece action of alternating magnetic field, it may occur that small to become Change is magnetostriction, magnetostriction make it is unshakable in one's determination do periodic vibration with excitation frequency change, magnetostriction deformation unshakable in one's determination and winding, In fuel tank and magnetic screen caused by electromagnetic force.It is to produce electromagnetic force in electric current winding that winding, which produces vibration cause, and stray field also can Structural member is set to produce vibration.Electromagnetic noise producing cause is that Magnetic Field-Induced core-lamination stack produces noise, the vibration along extensional vibration Amplitude is relevant with magnetic flux density in core-lamination stack and material magnetic energy unshakable in one's determination, and little with load current relation.Electromagnetic force (and Vibration amplitude) it is directly proportional to current squaring, and transmitting sound power is directly proportional to vibration amplitude square.Noise unshakable in one's determination is that transformer is made an uproar The main source of sound.Epoxy resin is a kind of already wide variety of industrial chemicals, and it is not only a kind of fire retardant, fire-retardant material Material, and with superior electric property, gradually used later by electrician's manufacturing industry.Since Germany in 1964 manufactures platform ring of informing against After the dry change of oxygen cast-type, this technology develops quickly in Europe, and constantly releases various new patent manufacturing technologies, these skills Art also constantly pushes the world to.Because the dry change manufacturing technology of China is mainly what is introduced from European countries such as Germany, so so far In the dry-type transformer of whole nation production, the overwhelming majority is epoxy pouring type.
Patent CN102360835 discloses a kind of dry-type transformer poured with epoxy resin material, mainly by bisphenol A-type ring Oxygen tree fat, aluminum nitride powder, quartz sand, mica powder, amine curing agent and endurable active toughener composition, utilize aluminum nitride powder and different grains The quartz sand increase heat conductivility in footpath, with heat-resist, thermal diffusivity is good, the advantages of thermal coefficient of expansion is suitable with copper material.Patent CN102515626 discloses a kind of dry-type transformer high-thermal-conductivity epoxy resin castable, is substituted using high heat conduction inorganic particle Conventional silicon powder improves the thermal conductivity factor of castable as filler.High heat conduction inorganic particle be alumina powder, aluminum nitride powder or Boron nitride powder.The thermal conductivity factor of high-thermal-conductivity epoxy resin is up to 1.1~1.3W/m K, it is possible to decrease the temperature rise of transformer.Patent 201410678408.4 disclose low noise dry-type transformer, in transformer bottom mounting shock absorber so that transformer is in operation During produced by vibrations offset, so as to eliminate noise, and the service life of extension transformer, reduce fault rate.
The content of the invention
Present invention aims to overcome that deficiency of the prior art has excellent ageing resistace and with low there is provided one kind The dry-type three-phase transformer of noise.
Dry-type three-phase transformer of the present invention, including iron core, the upper clamping piece of the clamping iron core upper end and the clamping iron core The lower clamping piece of lower end, around the transformer coil of the iron core, cross-over block, institute are provided with the top of the transformer coil The bottom for stating transformer coil is provided with lower cross-over block, and the bottom of the lower clamping piece is provided with base, the side of the lower clamping piece Face is provided with cooling blower, and the side of the upper clamping piece is provided with outlet copper bar；The transformer coil comprising low pressure winding and The high pressure winding outside the low pressure winding is looped around, the outside of low pressure winding and the high pressure winding is enclosed with the cast bed of material； The outer wrap of the iron core has noise reduction heat dissipating layer；The noise reduction heat dissipating layer includes four layers from the inside to surface, is particle noise reduction successively Layer, the first silica gel layer of cloth, silica gel cushion, the second silica gel layer of cloth；Particle noise reduction layer by the mesh of granularity 3000 snake stone flour, Aluminium nitride, the heat conductive silica gel of the mesh of granularity 6000, by weight 3:4:6 ratios are constituted；The silica gel cushion is heat conductive silica gel. Wherein particle noise reduction layer by the mesh of granularity 3000 snake stone flour, the aluminium nitride of the mesh of granularity 6000, DOW CORNING SE4420 heat conductive silica gels Mix in proportion solidification to form, thickness 0.3cm；Silica gel cushion is DOW CORNING SE9184 heat conductive silica gels, thickness 0.3cm； First silica gel layer of cloth and the second silica gel layer of cloth select U.S.'s Bei Gesi Sil-Pad K10 silica gel cloth.
Dry-type three-phase transformer of the present invention, the cast bed of material of low pressure winding and the high pressure winding, by following parts by weight Component be made：100~110 parts of E-51 epoxy resin, 3~4 parts of tri-isopropyl benzene base phosphoric acid, 650 polyamide curing agents 80~90 Part, N, 6~7 parts of N- dimethyl benzylamines, 2~3 parts of salicylic acid, 2~3 parts of zinc oxide, 2~3 parts of zinc Isoocatanoate, ethylene glycol two shrink 18~21 parts of glycerin ether, 10~12 parts of Di-phosphorus pentonide, 2 μm of average grain diameter, 8~10 parts of diadust, average grain diameter 50 are received 3~4 parts of silicon nitride powder of rice, 5~6 parts of 800 nano silicon nitride zirconium powder of average grain diameter.
Dry-type three-phase transformer of the present invention, the cast bed of material of low pressure winding and the high pressure winding, makes by the following method Into：
A, 11 parts of Di-phosphorus pentonide, 2 μm of average grain diameter, 9 parts of diadust, average grain diameter 50 is taken to receive by weight 3.5 parts of silicon nitride powder of rice, 5.5 parts of 800 nano silicon nitride zirconium powder of average grain diameter, are mixed evenly, and then add ethylene glycol two and contract Ultrasonically treated 50 minutes at 19 parts, 45 DEG C of water glycerin ether, component A is obtained；
B, 104 parts of E-51 epoxy resin, 3.5 parts of tri-isopropyl benzene base phosphoric acid are taken by weight, be uniformly mixed, obtain group Divide B；
C, 86 parts of 650 polyamide curing agent, N, 6.5 parts of N- dimethyl benzylamines, 2.8 parts of salicylic acid, oxygen are taken by weight Change 2.5 parts of zinc, 2.2 parts of zinc Isoocatanoate, be uniformly mixed, obtain component C；
D, by component B, component C mix after, add component A stir, be poured into the casting moulds of winding, then will Casting moulds are placed in epoxide resin vacuum casting machine, are solidified to solidify at 1h, 125 DEG C at 90 DEG C and are solidified 1h at 4h, 140 DEG C, are cooled down After remove casting moulds, produce.
The castable that the used in transformer coil special formulation of novel electric power transformer of the present invention is made is poured by vacuum pressure Note solidification is made, and new castable employs different-grain diameter and the powder filler complex technique of species, while using optimization Solidification enhancing formula, has reached the unapproachable performance of single powder；Therefore with prominent heat conductivility and excellent mechanics Performance, ageing resistace.The ageing-resistant performance of transformer coil is improved, the service life of dry-type transformer greatly improved. The present invention combines the noise reduction radiating that sound insulation heat conducting excellent performance is made using the heat conductive silica gel and composite micro-powder of function admirable simultaneously Layer, the setting of noise reduction heat dissipating layer greatly reduces the noise of transformer core.
Brief description of the drawings
Fig. 1 is dry-type three-phase transformer structural representation of the present invention.
Fig. 2 is noise reduction heat dissipating layer structural representation of the present invention.
Embodiment
The invention will be further described for example given below plan, but is not to be construed as to the scope of the present invention Limitation, some the nonessential modifications and adaptations of those skilled in the art according to present invention to the present invention still fall within this The protection domain of invention.
Embodiment 1：As shown in Figure 1 and Figure 2, dry-type three-phase transformer, including iron core 1, the upper clamping piece 2 of clamping iron core 1 upper end With the lower clamping piece 3 of clamping iron core 1 lower end, the transformer coil 4 of wound core 1, the top of transformer coil 4 is provided with insulation Cushion block 5, the bottom of transformer coil 4 are provided with lower cross-over block 6, and the bottom of lower clamping piece 3 is provided with base 7, the side of lower clamping piece 3 Face is provided with cooling blower 8, and the side of upper clamping piece 2 is provided with outlet copper bar 9；Transformer coil 4 is comprising low pressure winding and surround The outside of high pressure winding outside low pressure winding, low pressure winding and high pressure winding is enclosed with the cast bed of material；The outside bag of iron core 1 It is wrapped with noise reduction heat dissipating layer；Noise reduction heat dissipating layer includes four layers from the inside to surface, is particle noise reduction layer 10 successively, the first silica gel layer of cloth 11, Silica gel cushion 12, the second silica gel layer of cloth 13；Snake stone flour of the particle noise reduction layer 10 by the mesh of granularity 3000, the purpose of granularity 6000 Aluminium nitride, DOW CORNING SE4420 heat conductive silica gels, by weight 3:4:6 ratios are well mixed solidification and formed, thickness 0.3cm；Silicon Glue cushion 12 is DOW CORNING SE9184 heat conductive silica gels, thickness 0.3cm；First silica gel layer of cloth 11 and the second silica gel layer of cloth 13 are selected With U.S.'s Bei Gesi Sil-Pad K10 silica gel cloth.
The cast bed of material of low pressure winding and high pressure winding, is made by the following method：
A, take Di-phosphorus pentonide（RP-98）11 kilograms, 2 μm of average grain diameter, 9 kilograms of diadust, average grain diameter 50 receive 3.5 kilograms of silicon nitride powder of rice, 5.5 kilograms of 800 nano silicon nitride zirconium powder of average grain diameter, are mixed evenly, then add ethylene glycol Ultrasonically treated 50 minutes at 19 kilograms, 45 DEG C of diglycidyl ether, component A is obtained；
B, take Phoenix brand 104 kilograms of E-51 bisphenol-A liquid epoxy resins, 3.5 kilograms of tri-isopropyl benzene base phosphoric acid, stirring is mixed Close uniform, obtain component B；
C, take Phoenix brand 86 kilograms of 650 polyamide curing agent, N, 6.5 kilograms of N- dimethyl benzylamines, 2.8 kilograms of salicylic acid, 2.5 kilograms of zinc oxide, 2.2 kilograms of zinc Isoocatanoate, are uniformly mixed, obtain component C；
D, by component B, component C mix after, add component A stir, be poured into the casting moulds of winding, then will Casting moulds are placed in epoxide resin vacuum casting machine, are solidified to solidify at 1h, 125 DEG C at 90 DEG C and are solidified 1h at 4h, 140 DEG C, are cooled down After remove casting moulds, produce.
Embodiment 2：Structure such as be the same as Example 1, difference is the cast bed of material of low pressure winding and high pressure winding, by following Method is made：
A, take Di-phosphorus pentonide（RP-98）10 kilograms, 2 μm of average grain diameter, 8 kilograms of diadust, average grain diameter 50 receive 3 kilograms of silicon nitride powder of rice, 5 kilograms of 800 nano silicon nitride zirconium powder of average grain diameter, are mixed evenly, and then add ethylene glycol two and contract Ultrasonically treated 50 minutes at 18 kilograms, 45 DEG C of water glycerin ether, component A is obtained；
B, take Phoenix brand E-51 bisphenol-A liquid epoxy resins double centner, 3 kilograms of tri-isopropyl benzene base phosphoric acid, stirring mixing Uniformly, component B is obtained；
C, take Phoenix brand 80 kilograms of 650 polyamide curing agent, N, 6 kilograms of N- dimethyl benzylamines, 2 kilograms of salicylic acid, oxidation 2 kilograms of zinc, 2 kilograms of zinc Isoocatanoate, are uniformly mixed, obtain component C；
D, by component B, component C mix after, add component A stir, be poured into the casting moulds of winding, then will Casting moulds are placed in epoxide resin vacuum casting machine, are solidified to solidify at 1h, 125 DEG C at 90 DEG C and are solidified 1h at 4h, 140 DEG C, are cooled down After remove casting moulds, produce.
Embodiment 3：Structure such as be the same as Example 1, difference is the cast bed of material of low pressure winding and high pressure winding, by following Method is made：
A, take Di-phosphorus pentonide（RP-98）12 kilograms, 2 μm of average grain diameter, 10 kilograms of diadust, average grain diameter 50 4 kilograms of nano silicon nitride powders, 6 kilograms of 800 nano silicon nitride zirconium powder of average grain diameter, are mixed evenly, and then add ethylene glycol two Ultrasonically treated 50 minutes at 21 kilograms, 45 DEG C of glycidol ether, component A is obtained；
B, take Phoenix brand 110 kilograms of E-51 bisphenol-A liquid epoxy resins, tri-isopropyl benzene base phosphatase 24 kilogram, stirring mixing Uniformly, component B is obtained；
C, take Phoenix brand 90 kilograms of 650 polyamide curing agent, N, 7 kilograms of N- dimethyl benzylamines, 3 kilograms of salicylic acid, oxidation 3 kilograms of zinc, 3 kilograms of zinc Isoocatanoate, are uniformly mixed, obtain component C；
D, by component B, component C mix after, add component A stir, be poured into the casting moulds of winding, then will Casting moulds are placed in epoxide resin vacuum casting machine, are solidified to solidify at 1h, 125 DEG C at 90 DEG C and are solidified 1h at 4h, 140 DEG C, are cooled down After remove casting moulds, produce.
Transformer coil pours into a mould bed of material related experiment：Experiment is divided into five groups, respectively experimental group 1, the embodiment of the present invention 1；It is real The nano silicon nitride powders of average grain diameter 50, the nano silicon nitride zirconium powder of average grain diameter 800 in group 2, the embodiment of the present invention 1 are tested, is replaced with 2 μm of diadusts of average grain diameter of equivalent weight；The nano-silicon nitride of average grain diameter 50 in experimental group 3, the embodiment of the present invention 1 Powder, 2 μm of diadusts of average grain diameter, replace with the nano silicon nitride zirconium powder of average grain diameter 800 of equivalent weight；Experimental group 4, this 2 μm of diadusts of average grain diameter, the nano silicon nitride zirconium powder of average grain diameter 800, replace with equivalent weight in inventive embodiments 1 The nano silicon nitride powders of average grain diameter 50；Control group, removes 2 μm of diadusts of average grain diameter in the embodiment of the present invention 1, average grain The nano silicon nitride powders of footpath 50, the nano silicon nitride zirconium powder of average grain diameter 800.
Testing tool：Thermal conductivity：Using U.S. IN-TERNAT10NAC THERMAC INSTRUMENT companies production C mono- 600 1 S types Conduction Coefficient Detector Basings are tested, and specimen size is the mm of the mm of 149 mm × 149 × 5；Heat endurance：Use the U.S. The type thermal gravimetric analyzer tests of Perkin-Elmer companies production Phyris TGA 6；200 DEG C of air 250h weight-loss ratios, are determined Initial pyrolyzation temperature.Impact strength：Using X mechanical industry electrical material product quality supervisions inspection center production JJ-5 type letters Branch beam type shock machine is tested according to GB/T 16420-1996.Difference group test data the results are shown in Table 1, visible by table one The thermal conductivity of experimental group 1 of the present invention, hence it is evident that higher than other groups, while having good heat ageing and mechanical property.
Noise testing：According to standard GB/T 7328-87, method of testing：Transformer is when rated condition is run, away from change At depressor 1m its sound level level is measured with 2203 type precision sound level meters.With the equipment for power transmission and distribution Co., Ltd SCB11-500KVA that mutinies Dry-type transformer is control group, and experimental group 1 uses the embodiment of the present invention 1, is made up of the transformation of SCB11-500KVA dry-type transformers, Experimental group 2 is SCB11-500KVA dry-type transformers, DOW CORNING SE9184 heat conductive silica gels thick iron core parcel 0.6cm, outermost layer Wrap up U.S.'s Bei Gesi Sil-Pad K10 silica gel cloth.By the visible experimental group 1 using the present invention of table 2, noise has obvious drop It is low.

Claims (2)

1. a kind of dry-type three-phase transformer, including iron core, the upper clamping piece of the clamping iron core upper end and the clamping iron core lower end Lower clamping piece, cross-over block, the change are installed around the transformer coil of the iron core, at the top of the transformer coil The bottom of transformer coil is provided with lower cross-over block, and the bottom of the lower clamping piece is provided with base, the side peace of the lower clamping piece Equipped with cooling blower, the side of the upper clamping piece is provided with outlet copper bar；
It is characterized in that the transformer coil includes low pressure winding and the high pressure winding being looped around outside the low pressure winding, it is described The outside of low pressure winding and high pressure winding is enclosed with the cast bed of material；The outer wrap of the iron core has noise reduction heat dissipating layer；
The noise reduction heat dissipating layer includes four layers from the inside to surface, is particle noise reduction layer successively, the first silica gel layer of cloth, silica gel cushion, Second silica gel layer of cloth；The particle noise reduction layer is by the snake stone flour of the mesh of granularity 3000, aluminium nitride, the thermal conductive silicon of the mesh of granularity 6000 Glue, by weight 3:4:6 ratios are constituted；The silica gel cushion is heat conductive silica gel；
The cast bed of material of low pressure winding and the high pressure winding, is made up of the component of following parts by weight：E-51 epoxy resin 100 ~110 parts, 3~4 parts of tri-isopropyl benzene base phosphoric acid, 80~90 parts of 650 polyamide curing agent, N, 6~7 parts of N- dimethyl benzylamines, water 2~3 parts of poplar acid, 2~3 parts of zinc oxide, 2~3 parts of zinc Isoocatanoate, 18~21 parts of ethylene glycol diglycidylether, isooctanol phosphoric acid 10~12 parts of ester, 2 μm of average grain diameter, 8~10 parts of diadust, 3~4 parts of 50 nano silicon nitride powders of average grain diameter, average grain diameter 800 5~6 parts of nano silicon nitride zirconium powders.
2. dry-type three-phase transformer according to claim 1, it is characterised in that low pressure winding and the high pressure winding is poured Material feeding layer, is made by the following method：
A, 11 parts of Di-phosphorus pentonide, 2 μm of average grain diameter, 9 parts of diadust, 50 nanometers of nitrogen of average grain diameter are taken by weight 3.5 parts of SiClx powder, 5.5 parts of 800 nano silicon nitride zirconium powder of average grain diameter, are mixed evenly, and then add ethylene glycol two and shrink sweet Ultrasonically treated 50 minutes at oily 19 parts, 45 DEG C of ether, component A is obtained；
B, 104 parts of E-51 epoxy resin, 3.5 parts of tri-isopropyl benzene base phosphoric acid are taken by weight, be uniformly mixed, obtain component B；
C, 86 parts of 650 polyamide curing agent, N, 6.5 parts of N- dimethyl benzylamines, 2.8 parts of salicylic acid, zinc oxide are taken by weight 2.5 parts, 2.2 parts of zinc Isoocatanoate, are uniformly mixed, obtain component C；
D, by component B, component C mix after, add component A stir, be poured into the casting moulds of winding, then will cast Mould is placed in epoxide resin vacuum casting machine, is solidified at 90 DEG C and is solidified 4h at 1h, 125 DEG C；Torn open after solidifying 1h, cooling at 140 DEG C Except casting moulds, produce.
CN201610020372.XA 2016-01-13 2016-01-13 A kind of dry-type three-phase transformer Active CN105469961B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109616299A (en) * 2018-12-21 2019-04-12 江苏源通电气有限公司 A kind of half latent type ring oxygen resin casting dry-type transformer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113990613A (en) * 2021-11-03 2022-01-28 索高变压器有限公司 Dry-type transformer

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Publication number Priority date Publication date Assignee Title
US5075663A (en) * 1989-10-31 1991-12-24 Goldstar Electric Machinery Co. Ltd. Noise-shielded transformer
CN201204118Y (en) * 2008-06-18 2009-03-04 广东中电华强变压器有限公司 Resin insulated dry power transformer
CN201307503Y (en) * 2008-11-18 2009-09-09 上海南桥变压器有限责任公司 Noise reduction structure of amorphous alloy transformer
CN203300403U (en) * 2013-05-20 2013-11-20 南阳市鑫特电气有限公司 Dry-type transformer
CN203588811U (en) * 2013-11-15 2014-05-07 深圳供电局有限公司 Low-noise amorphous alloy iron core structure
CN104119827B (en) * 2014-07-25 2015-12-30 中国工程物理研究院化工材料研究所 A kind of room-temperature curing epoxy-acid anhydrides tackiness agent and preparation method thereof
CN204464017U (en) * 2015-04-10 2015-07-08 江西亚威电气有限公司 A kind of insulating dry type transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109616299A (en) * 2018-12-21 2019-04-12 江苏源通电气有限公司 A kind of half latent type ring oxygen resin casting dry-type transformer
CN109616299B (en) * 2018-12-21 2021-04-13 江苏源通电气有限公司 Semi-submersible epoxy resin cast dry-type transformer

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